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Employee Benefit Plans - (Details) - USD ($) $ in Thousands	12 Months Ended
	May. 02, 2015	Apr. 26, 2014	Apr. 27, 2013
Compensation and Retirement Disclosure [Abstract]
Percentage of matching contribution	50.00%
Maximum annual contribution percentage	6.00%
Award requisite service period	1 year
Minimum age attained for award	21 years
Minimum hours worked	1000 hours
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions	$ 2,115	$ 1,859	$ 1,713
Officers and Former Director
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions	23	23	$ 23
Contribution plan, accrued interest	$ 433	$ 522
Lump sum distribution period, option one	5 years
Lump sum distribution period, option two	10 years
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 93

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Defined Contribution Plan, Accrued Interest

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The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 715



-SubTopic 60



-Section 50



-Paragraph 4



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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of the cost recognized during the period for defined contribution plans.

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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